Patents by Inventor Dominique Sidrac

Dominique Sidrac has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Photostable cosmetic light screening compositions
    Patent number: 6338838
    Abstract: The present invention relates to a photostable cosmetic or pharmaceutical light screening composition containing a dibenzoylmethane UV-A screening agent and a p-methoxycinnamate UV-B screening agent, one of said agents being incorporated into a polymer latex; and, optionally, other conventional UV-A and UV-B screening agents. Additionally, the present invention relates to a method of photostabilizing dibenzoyl-methane UV-A screening agents and p-methoxycinnamate UV-B screening agents when used together, by incorporating one of these agents into a polymer latex.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: January 15, 2002
    Assignee: Roche Vitamins Inc.
    Inventors: Guy Berset, Gilbert Pittet, Joël François Richard, Dominique Sidrac
  • Cosmetic light screening composition
    Patent number: 6165451
    Abstract: The invention relates to cosmetic light screening compositions containinga) a compound of formula I ##STR1## wherein R.sup.1 is a C.sub.1-8 straight or branched alkyl chain, andR.sup.2 and R.sup.3 are each independently a C.sub.1-8 straight or branched alkyl chain;b) common UV-B and/or common UV-A screening agents; andc) a cosmetically acceptable carrier.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: December 26, 2000
    Assignee: Roche Vitamins Inc.
    Inventors: Alain Bringhen, Hans Ulrich Gonzenbach, Rolf Schwarzenbach, Dominique Sidrac
  • Light screening compounds and compositions
    Patent number: 6069170
    Abstract: The invention relates to a cosmetic light-screening composition for protecting human skin or human hair against ultraviolett radiation containing at least one compound of formula I ##STR1## wherein R.sup.1 represents a C.sub.1-8 straight or branched alkyl chain, andR.sup.2 and R.sup.3 each independently represent a C.sub.1-8 straight or branched alkyl chain.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: May 30, 2000
    Assignee: Roche Vitamins Inc.
    Inventors: Alain Bringhen, Hans Ulrich Gonzenbach, Magali Pochon, Dominique Sidrac
  • Light screening compositions
    Patent number: 5985251
    Abstract: The invention relates to cosmetic light-screening compositions comprising at least one fatty phase anda) about 0.5 to 5 wt % of a dibenzoylmethane derivative, preferably about 0.5 to 3 wt %;b) about 0.5 to 12 wt % of a 3,3-diphenylacrylate- or benzylidene camphor derivative, preferably about 0.5 to 10 wt %; andc) about 1 to 15 wt % of a water-soluble p-methoxycinnamate derivative, preferably about 1 to 10 wt %.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: November 16, 1999
    Assignee: Roche Vitamins Inc.
    Inventors: Hans Ulrich Gonzenbach, Alain Bringhen, Dominique Sidrac